Analytical approach to the quantum-phase transition in the one-dimensional spinless Holstein model

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dc.creatorSykora, S.
dc.creatorHuebsch, A.
dc.creatorBecker, K. W.
dc.date2005-05-27
dc.date2006-05-25
dc.date.accessioned2026-07-07T06:37:52Z
dc.date.available2026-07-07T06:37:52Z
dc.descriptionWe study the one-dimensional Holstein model of spinless fermions interacting with dispersion-less phonons by using a recently developed projector-based renormalization method (PRM). At half-filling the system shows a metal-insulator transition to a Peierls distorted state at a critical electron-phonon coupling where both phases are described within the same theoretical framework. The transition is accompanied by a phonon softening at the Brillouin zone boundary and a gap in the electronic spectrum. For different filling, the phonon softening appears away from the Brillouin zone boundary and thus reflects a different type of broken symmetry state.
dc.description8 pages, 4 figures included; v2: completely revised and extended; v3: minor changes, final version, to be published in Eur. Phys. J. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0505687
dc.identifierhttp://arxiv.org/abs/cond-mat/0505687
dc.identifierEur. Phys. J. B 51, 181 (2006)
dc.identifierdoi:10.1140/epjb/e2006-00211-1
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/100544
dc.subjectStrongly Correlated Electrons
dc.titleAnalytical approach to the quantum-phase transition in the one-dimensional spinless Holstein model
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